20995730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{977}}^1$

素因数の和:1298

約数の個数: 32

約数和(自身を含む): 43376256

約数和(自身を除く): 22380526

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 307, 614, 977, 1535, 1954, 2149, 3070, 4298, 4885, 6839, 9770, 10745, 13678, 21490, 34195, 68390, 299939, 599878, 1499695, 2099573, 2999390, 4199146, 10497865, 20995730]

約数ペア:

[(1, 20995730), (2, 10497865), (5, 4199146), (7, 2999390), (10, 2099573), (14, 1499695), (35, 599878), (70, 299939), (307, 68390), (614, 34195), (977, 21490), (1535, 13678), (1954, 10745), (2149, 9770), (3070, 6839), (4298, 4885)]